It is accelerometer based casual game. You control Fugu, the Puffer Fish and have collect pearls within a time limit. There are various enemies (fish, jelly-fish, anemones) and obstacles that prevent your mission.
There are 45 levels in the first release, plan is to release each month new 15 levels with unique graphics design and new game elements. First 3 levels are for learning the basics of the game, rest of levels are pretty action like